meanwhile the fbi is trying to determine whether jessica's disappearance is linked to the sexual assault of an 11-year-old girl in wyoming. >>> also this morning we're learning some dramatic new details about last month's attack in libya that killed u.s. ambassador chris stevens and three other americans, all of this taking place ahead of a major congressional hearing set for later today. the state department says several groups of men lost a sustained assault without warning, armed with machine guns, mortars, even rocket-propelled grenades. and the state department officials are backing away from early administration claims that anger over the anti-muslim video is what sparked the rampage. a 345i superior a major reversal there. >>> also, politic this morning, 27 days left until the big election in november. mitt romney joined on the campaign trail last night in ohio by new jersey governor chris christie. given the critical role that that state plays in this year's election, romney is devoting much energy there ahead of next tuesday's debate. >>> meanwhile president obama is back in the